<template>
  <div>
    <el-form ref="form" :rules="rules" :model="form">
      <el-form-item label="部门名称" label-width="100px" prop="name">
        <el-input v-model="form.name" />
      </el-form-item>
      <el-form-item label="部门编码" label-width="100px" prop="code">
        <el-input v-model="form.code" />
      </el-form-item>
      <el-form-item label="部门负责人" label-width="100px" prop="manager">
        <el-select v-model="form.manager">
          <el-option
            v-for="item in list"
            :key="item.id"
            :value="item.username"
            :label="item.username"
          />
        </el-select>
      </el-form-item>
      <el-form-item label="部门介绍" label-width="100px" prop="introduce">
        <el-input v-model="form.introduce" />
      </el-form-item>

      <el-form-item>
        <el-button @click="hCancel">取消</el-button>
        <el-button type="primary" @click="hSubmit">确定</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>
<script>
import {
  getSimpleEmployee,
  addDepartment,
  getDepartDetail,
  updateDepartments,
} from "@/api/departments";

export default {
  props: {
    pid: {
      type: String,
      required: true,
    },
    isEdit: {
      type: Boolean,
      required: true,
    },
    originList: {
      // 表单校验
      type: Array,
      required: true,
    },
  },
  data() {
    const validCode = (rule, value, callback) => {
      console.log("validCode....", value);
      // value就是当前用户输入的编码，它不能与现有的编码数据（originList）重复
      // 如果重复，就验证不通过
      // if(value能与现有的编码数据（originList）重复) {
      // 1. 从originList（[{id, pid,name, code},{id, pid,name, code}]）中找出全部的编码数据
      let existCodeList = this.originList.map((item) => item.code);

      if (this.isEdit) {
        // 把当前正在编辑的部门编号（this.id）排除在外
        console.log("现在是编辑状态，正在编辑的id是", this.id);
        // 过滤掉当前的部门, map得到部门编号列表
        existCodeList = this.originList
          .filter((item) => item.id !== this.id)
          .map((item) => item.code);
      }
      console.log("existCodeList", existCodeList);
      // 2. 检查value 是否存在其中

      // if (existCodeList.includes(value)) {
      //   callback(new Error('编码' + value + '已经存在'))
      // } else {
      //   callback()
      // }
      existCodeList.includes(value)
        ? callback(new Error("编码" + value + "已经存在"))
        : callback();
    };
    const validName = (rule, value, callback) => {
      // 思路：被占用的名字是这个部门的子部门
      let existNameList = this.originList
        .filter((item) => item.pid === this.id)
        .map((item) => item.name);
      console.log("validName.... , 当前被校验的名字是", value);
      // const existNameList = ['财务核算部', '薪资核算部']
      // 如果是编辑，则被占用的名字 = 兄弟-自己
      if (this.isEdit) {
        // 1. 找到当前被编辑的元素
        const dept = this.originList.find((item) => item.id === this.id);
        // 2. 取出pid(它的父级是谁)
        const pid = dept.pid;
        // 3. 过滤： 同一个父级，不包括自己； map： 只要需要名字
        existNameList = this.originList
          .filter((item) => item.pid === pid && item.id !== this.id)
          .map((item) => item.name);
      }
      console.log("被占用的名字列表", existNameList);

      if (existNameList.includes(value)) {
        callback(new Error("名字" + value + "已经被占用了"));
      } else {
        callback();
      }
    };
    return {
      form: {
        name: "",
        introduce: "",
        manager: "",
        code: "",
      },
      list: [],
      rules: {
        name: [
          { required: true, message: "部门名称不能为空", trigger: "blur" },
          {
            min: 1,
            max: 50,
            message: "部门名称要求1-50个字符",
            trigger: "blur",
          },
          { validator: validName, trigger: "blur" },
        ],
        code: [
          { required: true, message: "部门编码不能为空", trigger: "blur" },
          {
            min: 1,
            max: 50,
            message: "部门编码要求1-50个字符",
            trigger: "blur",
          },
          { validator: validCode, trigger: "blur" },
        ],
        manager: [
          { required: true, message: "部门负责人不能为空", trigger: "blur" },
        ],
        introduce: [
          { required: true, message: "部门介绍不能为空", trigger: "blur" },
          {
            min: 1,
            max: 300,
            message: "部门介绍要求1-300个字符",
            trigger: "blur",
          },
        ],
      },
    };
  },
  created() {
    this.loadSimpleEmployee();
    if (this.isEdit) {
      this.loadDetail();
    }
  },
  methods: {
    // 获取当前部门的详情
    async loadDetail() {
      const res = await getDepartDetail(this.pid);
      console.log("现在是编辑，要去获取详情", res);
      this.form = res.data;
    },
    async loadSimpleEmployee() {
      const res = await getSimpleEmployee();

      // console.log(res.data)
      this.list = res.data;
    },
    async doAdd() {
      // 调用接口
      try {
        await addDepartment({ ...this.form, pid: this.pid });

        // 通知父组件操作成功
        this.$emit("success");
      } catch (err) {
        console.log(err);
      }
    },
    async doEdit() {
      try {
        await updateDepartments(this.form);
        // 通知父组件操作成功
        this.$emit("success");
      } catch (err) {
        console.log(err);
      }
    },
    hSubmit() {
      this.$refs.form.validate((valid) => {
        if (valid) {
          this.isEdit ? this.doEdit() : this.doAdd();
        }
      });
    },
    resetForm() {
      // 重置表单
      this.$refs.form.resetFields();
    },
    // 用户点击了取消
    hCancel() {
      // 通知父组件去关闭弹层
      this.$emit("close");
    },
  },
};
</script>
